Heating the room through the central hot water unit (commonly known as hot water boiler) to produce heating and hot water heating in line with the (temperature of 90 ~ 95 ℃), then heat pump hot water through the heating pipe to the heating system user terminal equipment ( radiators), for recycling.

In order to reduce heat losses and personnel system burns must be piping heating system (especially the outdoor piping) insulation, the use of insulation materials are currently isolated from the pipeline.

Boiler type:

Fired: the vast majority of our country's heating boilers are used coal as fuel. Coal-fired heating boilers both have hot water boiler steam boiler, a large number of its structure, according to the basic form can be divided into fire-tube boilers and water-tube boilers. Fire tube boiler in between.

Fuel: oil-fired boilers are common in developed countries. Since oil "vaporizing" the temperature is lower than the ignition point, therefore the oil is first evaporated into steam, and then burned at the vapor state. Droplets prior to combustion, which first evaporation surface, after evaporation of the oil vapor and oxygen in the air interdiffusion, oil vapor obtained after oxygen to burn.

Gas: The gas boiler fuel has many advantages, such as high thermal efficiency, low equipment costs, clean-running, fast start, no fuel reserves, flexible adjustment, measurement and simple. The main difference with the other parts of the boiler burner, press the burner structure of sub once-and swirl.

Electric: the use of electrical energy to produce steam or hot water boilers.

Insulation parts: pipe connected to the boiler steam or hot water pipe section. For insulation, its thermal conductivity λ value, the better.

The main factors affecting the thermal conductivity has an apparent density of the material, internal structure, temperature and humidity, age and the like.

Works on the thermal conductivity of the insulation material of the required value is defined as: λ value of 0.20w / (mk) as insulation material and the cut-off value of non-insulation material.

British cable chlorpyrifos using scientific methods in considering the impact of factors determined on the basis of a low thermal conductivity, thermal conductivity of the initial 0.033W / (m • k)